diff --git a/pkg/client/client.go b/pkg/client/client.go
index 51ebb4c4b..fb055d377 100644
--- a/pkg/client/client.go
+++ b/pkg/client/client.go
@@ -35,7 +35,7 @@ type Config struct {
 	TLS             tls.ClientConfig
 	UseLegacyRoutes bool   `yaml:"use_legacy_routes"`
 	AuthToken       string `yaml:"auth_token"`
-	RulerAPIPath    string `yaml:"rulerAPIPath"`
+	RulerAPIPath    string `yaml:"ruler_api_path"`
 }
 
 // CortexClient is used to get and load rules into a cortex ruler